CN1509306A - Structure-changeable flexble film - Google Patents

Structure-changeable flexble film Download PDF

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Publication number
CN1509306A
CN1509306A CNA028101472A CN02810147A CN1509306A CN 1509306 A CN1509306 A CN 1509306A CN A028101472 A CNA028101472 A CN A028101472A CN 02810147 A CN02810147 A CN 02810147A CN 1509306 A CN1509306 A CN 1509306A
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film
film according
energy
flexible layer
make
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Chinese (zh)
Inventor
���Ρ�˹����
乔治·特拉尼
马里翁·施特纳
��÷�ڼ���
埃莱纳·梅内加佐
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GIROGIO TRANI
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GIROGIO TRANI
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/12—Chemical modification
    • C08J7/16—Chemical modification with polymerisable compounds
    • C08J7/18—Chemical modification with polymerisable compounds using wave energy or particle radiation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/10—Homopolymers or copolymers of propene
    • C08J2323/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2467/06—Unsaturated polyesters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31786—Of polyester [e.g., alkyd, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Laminated Bodies (AREA)
  • Materials For Medical Uses (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Prostheses (AREA)
  • Wrappers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Polyethers (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Organic Insulating Materials (AREA)
  • Control Of Metal Rolling (AREA)
  • Endoscopes (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)

Abstract

A structurally modifiable flexible film characterised by comprising at least one flexible layer associated over at least a part of its area with a stiffening system consisting of at least one substance which is originally liquid but is subsequently thickened and further stiffened by administration of energy.

Description

Structurally modifiable flexible film
The present invention relates to a kind of fexible film of structurally variable, it is used to form size and constitutionally stable article-especially disposable container.
As known in the art, one-trip container is to make with firm thin layer plate, the normally outer paper that is covered with plastics of this thin layer plate, paper is got off by loose winding from spool, and presents desirable spatial configuration through adhesion process, folding process and possible moulding process successively.Can be in the process of making these containers or after container is made fully, in container, pack into liquid state, particulate state or powdery product.
But the outward appearance on stability stackability, shelf show property, intensity, to the protectiveness of product, be easy to preserve and use and be convenient to again closed aspect, these existing one-trip containers have lot of advantages.But their weight is quite big, and cost is very high, and these containers are difficult to recycle owing to being not easy to rub wrinkle.Flexible one-trip container also is existing, and it is to make with plastics film, and plastics wherein for example are polyethylene, and this container has been eliminated the shortcoming of rigid container basically; Especially: their cost is very low, and volume is littler, is easy to recycling, and is and simple and practical, also is convenient to get away the beginning from stock roll simultaneously and makes with machine.But in fact these containers do not have any dimensional stability, thereby are not easy to pile up, and in addition, consider from the angle of commerce, owing to this container is unsuitable for showing on shelf, so there is certain limitation.
In order to solve existing these defectives of dissimilar existing containers, and meanwhile can also keep their advantage-more definite, have dimensional stability in order to form, simultaneously cost also very low, and can be after use reduced volume article (specifically, be one-trip container), propose a kind of method by the applicant, in claim 1, described this method.
It is very effective that this method has been proved to be, this method makes that article-especially one-trip container can be made by certain fexible film, before making article, described film can be winding on the spool, thereby can dwindle occupied space significantly, then, only in the time will making article, this film is just hardened.
The object of the present invention is to provide a kind of film of structurally variable, this film especially will be used in the above-mentioned known method, and as the substitute of used fexible film in this method.
Structurally variable fexible film according to the present invention is characterised in that: it comprises at least one flexible layer, on at least a portion area of this flexible layer, connected a stiffening system, this stiffening system is to be made of at least a such material: it is initially liquid, but subsequently by applying energy, can make this material retrogradation, and further sclerosis.
To some of the preferred embodiment of the invention further be illustrated by means of the embodiment of indefiniteness below.
In one first embodiment, the fexible film of structurally variable is a kind of film of being made up of several layers of body 2, and the utilization of these layers body combines by means of roll extrusion or the conventional adhesive technology carried out of extruding.One of them layer body is to make with traditional fexible film, and the material of this film for example is polyethylene, polypropylene, polyester, aluminium, paper etc.But another layer in these layers body is to make with the filmogen that twice structural transformation can take place, structural transformation for the first time (stage A) occurs in the adhesion process of film, current change or spontaneous generation or by applying energy (for example heating) takes place, this transformation is transformed into this material in this state: making that multilayer film becomes can be processed, change for the second time is that this transformation is to realize by the energy that applies particular form after a while as requested and (stage B) that take place.Specifically, the energy that is applied can be luminous energy (its spectrum is for example in the UV scope), ultrasonic wave, electron beam, heat energy (triggering the temperature of temperature greater than the fs) etc.
Reversible material can comprise the whole surface or the part surface of traditional fexible film, under the former situation, can utilize the shop to be coated with or the method for spraying is used this material, perhaps also this material can be made film, is adhered to then on the common fexible film; Under second kind of situation, can use reversible material by the method for impression.In both cases, multilayer film 2 all are flexible, and can be processed, according to the similar mode of common fexible film, this film is winding on the spool to be deposited.
Advantageously: but converting substances can be several mixture of polymers, the material system that it for example is made up of unsaturated polyester resin and one or more thickening materials of Photocrosslinkable; Or the material system of forming by nonsaturation Resins, epoxy and certain acid anhydrides; Or the material system of forming by unsaturated polyester and diisocyanate; Or the material system of forming by polyvalent alcohol and certain diisocyanate; Or the material system of forming with Resins, epoxy, diacrylate (diacrylate) and a kind of diisocyanate; Or the material system of forming with polyurethane adhesive and a kind of vinylformic acid thing; Or, and so on, in these materials, in the fs, understand polymerization reaction take place between two kinds of different resins by the material system that vinyl varnish and certain vinylformic acid thing are formed, this will cause the appearance of polymerization crosslinking; Perhaps can make polymerization reaction take place between the molecule of resin of the same race; Perhaps make the material thickening, thereby improve the workability of film, and in subordinate phase, final sclerosis has taken place in material by several molecule being carried out coordination valence around a coordination center.
Usually be provided with various ingredients in this reversible system, at least wherein a kind of has two keys; A kind of activator (light trigger, heat activated agent, catalyzer) also can be set in system.
After making film 2, for example when being inflexible article or container 4 substantially with this thin film fabrication, film will be subjected to the energy of certain form, but the form of this energy is suitable with the characteristic of converting substances, thereby makes film change the state of substantially rigid into from flexible state.
Can be at any time, apply energy according to any mode, this also depends on the article that will make, for example, if the article that make seal by being used for sealing object with self shape-for example be used to that the coating layer of plate forms, then after flexible multi-layered film is attached on the plate, must apply energy to the whole surface of described plate.
But, if but the article that coated are formed (for example being the handrail of armchair) by reduced plate or convex body, then multilayer film should be extending types, so that can accurately fit on the object, and can not form scrimp or folded, and must apply energy to the whole surface of described plate.
At last, if the article that will make are made of a container 4, this container for example is a bag shape, and it only is only at edge and has just endured, thereby, reversible material or only be applied to the edge strip place of multilayer film, these edge strips have formed the turning of container; But converting substances or also can be applied on the whole surface of film.Under first kind of situation, can apply energy to the whole surface of film, and under second kind of situation, must adopt the method for mask to apply energy, promptly must make energy only cover the edge strip that those will constitute the container turning.
In a kind of different embodiment, the fexible film of reconfiguration is a kind of single thin film, and this film is the form of fexible film, its at least the part be that porous material-for example is paper or non-woven fabrics, with reversible material this material is soaked into.In such a manner, utilize a kind of individual layers just can make a kind of matrix material, in this single thin film, treating compound has constituted base-material, and film then becomes reinforcing filler, by changing for the first time, this material is converted into a kind of state: in this state, material can be processed, handle; Carried out as requested after the transformation for the second time, material has just become inflexible basically.
Even be used in material in second embodiment should guarantee film can not be viscose glue-at it through before the final sclerosis, this material for example can be to be dispersed in the water or to be dissolved in urethane vinylformic acid, the unsaturated polyester in certain solvent, the CALCIUM ACRYLATE that has various groups or other material.
In a kind of remodeling of this embodiment, but the thin film of individual layer can be fitted on the common fexible film, thereby forms a multilayer film, in this multilayer film, have at least one deck to have the different characteristic that changes can take place twice, the second layer in the multilayer film then can improve its mechanical property.
In one the 3rd embodiment, as requested the sort of and the hardened material also has squeezable characteristic, in such a manner, only to himself pushing the fexible film that just can form reconfiguration, perhaps also can with the film forming polyolefine co-extrusion of energy.
In the latter case, in compression stage, hardening material has taken place to change for the first time, thereby changed into fexible film, to change for the second time then be the decision hardened, and after the required form of energy of the system that applied as required, this just changes for the second time and has been triggered.
In two kinds of above-mentioned situations, hardening material belongs to flexible type, obviously, it will comprise the whole surface of reconfiguration film of the present invention, correspondingly, if only require in the localized area on film and change, then when applying energy, must adopt mask.
The 4th embodiment of reconfiguration fexible film is presented as a kind of compromise proposal between the above-mentioned embodiment.According to the 4th embodiment, as described at first embodiment, fexible film is a multilayer type-be that it is made of several layers of body, and one deck wherein is traditional flexible membrane, has used hardening material on this flexible membrane; But at least one other layer body of multilayer film is made of hardened material or contains hardened material.Whether thereby in the case, the energy that is applied must affact on a plurality of layers of body, and can be identical or different and effect is strengthened or selected according to used material.
The 5th embodiment of reconfiguration fexible film is to be made of a kind of common fexible film, on this general thin, deposited a kind of crosslinkable polymkeric substance, in order to be competent at such application, this polymkeric substance is solid-state at ambient temperature, and can be by suitable solvent cut.In the case, what for the first time conversion stage comprised is operating as: solvent evaporation is fallen, utilized possible combining method that fexible film is attached on one second film then, thereby obtain a kind of machinable, the multilayer film that can reel; At last use or the adjusting of not administration of activated agent under, it is crosslinked that polymkeric substance takes place the method by applying energy (for example be electron beam, perhaps can use UV existing under the condition of light trigger), thereby multilayer film are hardened.
The 6th embodiment of reconfiguration fexible film has used a kind of mixture, this mixture is made up of the polymkeric substance of two kinds of free radical polymerizations, it is as hardening material, be applied on the common fexible film, a kind of radical polymerization thing wherein is liquid, and another kind then is solid-state (promptly playing the physics thickening).In the case, solid-state-especially the polymkeric substance of powdered form can be suspended in the liquid polymer, and the denseness of suspension should make it spread by common method and be coated with; Changing for the first time is calorifics, and it causes the solid polymer in the liquid polymer to dissolve, thereby makes the viscosity in the system that significant increase be arranged; Changing for the second time then is to make at least a generation in two kinds of polymkeric substance crosslinked, causes the final sclerosis of plastics film thus.Employed in this case material can be solid polyester and liquid polyesters, and wherein at least a be undersaturated; Also can be solid-state diacrylate and the diacrylate of liquid state or the material system of hybridization.Such system has advantage: very rapidly retrogradation, and the specification characteristic of resin there is no too this and seriously influences.
The 7th embodiment of structurally variable fexible film relates to such scheme: use a kind of material system on a common film, this material system is made up of a kind of two component polyurethane caking agent and expandable microparticle.In the case, the structural transformation stage is the process that forms polyurethane adhesive for the first time, and realization is bonding between base-material, film and microparticle then, and subordinate phase then is such process: owing to applied heat energy, and microparticle is expanded.Along with the expansion of microparticle, its volume will increase, and the part that accommodates these microparticles in the film has been become just very.
In a kind of modification of this embodiment, microparticle is involved in a kind of like this material system: after applying the energy of identical or different type, it can take place crosslinked; Microparticle or involved to above-mentioned two the stage hardening material system a certain in.In the case, changing for the first time is to make the system thickening that contains microparticle, be used to realize that final hardened transformation then can make microparticle expand, and it is crosslinked that the material system that contains microparticle is taken place, thereby can improve the product that finally makes.
The 8th embodiment of reconfiguration fexible film relates to such scheme: add a kind of filler in a kind of pair of zero pour organic resin, this filler is the form of nano particle, so just formed a kind of " nano-complex ", thereby can improve the Young's modulus of resin, and then improve the Young's modulus of multilayer film.In order to make nano particle have significant contribution to the mechanical characteristics of film, nano particle must be bonded on the resin, and in order between base-material and filler, to obtain good binding, must make nano particle have certain function with organic group, thereby can between particle and base-material, form chemical bond with used resin compatible.Preferably: used particle belongs to inorganic nature, and it can be the kaolin of the material that exists of nature-for example; It perhaps also can be synthetics (for example organoalkoxysilane); Perhaps also can be the material of forming with mixture, can be on these materials the coat polymers base-material, thereby can combine with the compatible part in the resin, these particles and resin compatible partly form nano particle.
The 9th embodiment of the fexible film of reconfiguration is based on the use of a kind of compounding substances system, and this material system is made up of an inorganic part and an organic moiety, and available nano particle strengthens.In the case, realized the combination of two aspect effects: for organic moiety, it can guarantee that film has snappiness, and for inorganic part, it can make Young's modulus that significant increase is arranged.At last, the nano particle that is added can also form nano complexes material, and it can further improve the rigidity of film.In the case, employed nano particle can be the organic and inorganic mixture, thereby can form chemical bond between the inorganic part of base-material and organic moiety.
No matter the fexible film of reconfiguration of the present invention with which kind of method makes, it all is machinable, and can be wound up on the spool and store, and can be used in the present wrapping mechanism.
When will be with all or part of sclerosis of fexible film, must provide energy to material system, thereby can cause final transformation with required type and intensity, make that the predetermined portion on the film is hardened.

Claims (7)

1. the fexible film of a structurally variable, it is characterized in that, comprise: at least one flexible layer, on at least a portion area of this flexible layer, be provided with a kind of stiffening system, this stiffening system comprises at least a such material: it is initially liquid, but can make this material retrogradation by applying energy subsequently, and further sclerosis.
2. film according to claim 1 is characterized in that: the described material that is connected with flexible layer part at least is reversible, this transformation or spontaneous, or by applying energy-for example heat takes place.
3. film according to claim 1 is characterized in that: flexible layer comprises at least one material layer, and this material layer is included in one group of material, and this group material comprises polyethylene, polypropylene, polyester, aluminium, paper.
4. film according to claim 1 is characterized in that: but described converting substances comprises the mixture of multiple polymers.
5. film according to claim 4 is characterized in that: but described converting substances comprises the mixture of multiple unsaturated polyester resin.
6. film according to claim 5 is characterized in that: but described converting substances comprises multiple unsaturated polyester and at least a mixtures of thickening agents.
7. film according to claim 4 is characterized in that: but described converting substances comprises the mixture of Resins, epoxy, diacrylate, diisocyanate and photoinitiator.
CNA028101472A 2001-05-18 2002-05-14 Structure-changeable flexble film Pending CN1509306A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001VE000026A ITVE20010026A1 (en) 2001-05-18 2001-05-18 STRUCTURALLY MODIFYABLE FLEXIBLE FILM, TO REALIZE DIMENSIONALLY AND STRUCTURALLY STABLE OBJECTS, IN PARTICULAR CONTAINERS
ITVE01A000026 2001-05-18

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EP (1) EP1401928B1 (en)
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KR (1) KR20030096411A (en)
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WO2009023645A1 (en) * 2007-08-16 2009-02-19 Smart Nanomaterials, Llc Nano-enhanced modularly constructed container
ITVE20110077A1 (en) * 2011-11-30 2013-05-31 Giorgio Trani MULTIFUNCTION APPARATUS FOR PROCESSING RIBBONS OF FIBROUS AND / OR PLASMAABLE MATERIAL.

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ITVE20010026A1 (en) 2002-11-18
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ES2305249T3 (en) 2008-11-01
PT1401928E (en) 2008-07-10

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